Monthly Archives: April 2019

My book ‘Cricket analytics with cricketr and cricpy’ is now on Amazon

April 29, 2019
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My book ‘Cricket analytics with cricketr and cricpy’ is now on Amazon

‘Cricket analytics with cricketr and cricpy – Analytics harmony with R and Python’ is now available on Amazon in both paperback ($21.99) and kindle ($9.99/Rs 449) versions. The book includes analysis of cricketers using both my R package ‘cricketr’ and my python package ‘cricpy’ for all formats of the game namely Test, ODI and T20. … Continue reading My...

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Getting a Data Science Job is not a Numbers Game!

April 29, 2019
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Getting a Data Science Job is not a Numbers Game!

My First (Non Data Science) Job Search Let me tell you a story about my first job search. It was 2010, and data science jobs weren't really a thing yet. I'll get to that in a minute, but bear with me first because there's a point to all this. At the...

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Why use RTutor for interactive tutorials if there is RStudio’s learnr?

April 29, 2019
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Why use RTutor for interactive tutorials if there is RStudio’s learnr?

There are nowadays different options to create interactive R tutorials that allow users to type in code, automatically check their solution and get hints if they are stuck. Two options are RStudio’s learnr package and my RTutor package. Obviously, ...

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Templated output in R

April 28, 2019
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Earo Wang, who is the curator for the We are R-Ladies twitter feed this week (last week of April, 2019), had a really nice tweet about using the whisker package to create a template incorporating text and data in R. Her example created a list of tidyverse packages with descriptions. I really liked the example, but thought that the glue...

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visualising bias and unbiasedness

April 28, 2019
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visualising bias and unbiasedness

A question on X validated led me to wonder at the point made by Christopher Bishop in his Pattern Recognition and Machine Learning book about the MLE of the Normal variance being biased. As it is illustrated by the above graph that opposes the true and green distribution of the data (made of two points)

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Interact with PostGIS from R

April 28, 2019
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Interact with PostGIS from R

PostGIS extends capabilities of PostgreSQL database to deal with spatial data. Using PostGIS, your database supports geographic queries to be run directly in SQL. In this blog post, we will connect and interact with a PostGIS database from R, using {DBI} and {sf}. Package {sf} and PostGIS are friends Package {sf} is similar to PostGIS database in multiple ways:...

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RStudio’s multiple cursors rule!

RStudio’s multiple cursors rule!

(TL;DR: Come on. This is pretty short. Productivity level up by harnessing the power of RStudio!)

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NYC… Dangerous or Deadly?

April 28, 2019
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NYC… Dangerous or Deadly?

Introduction Data & Methodology The App and Results Map Tables and Charts Future Research

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Tips to Reduce the Complexity of Slide Making with Xaringan

April 28, 2019
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Although I’m a strong believer in R Markdown, I’m not so sure about it in the realm of slide making. After using GUI slide making tools such as Powerpoint or Google Slides for years, it is not easy to get used to making slides with markdown, since it requires additional processing in the brain – the conversion between images...

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The Mrs. White probability puzzle

April 28, 2019
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The Mrs. White probability puzzle

tl;dr -I don’t remember how many games of Clue I’ve played but I do remember being surprised by Mrs White being the murderer in only 2 of those games. Can you give an estimate and an upper bound for the number of games I have played?We solve this problem by using Bayes theorem and discussing … Continue reading The...

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